The model of microwave phase inverter controlled by a neon plasma source

• Дата: 2018
• Автори: Zaleskyi, D.Yu., Krivonosov, G.A., Sotnikov, G.V.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2018
• Назва видання: Вопросы атомной науки и техники
• Теми: Новые и нестандартные ускорительные технологии
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/147290
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: The model of microwave phase inverter controlled by a neon plasma source / D.Yu. Zaleskyi, G.A. Krivonosov, G.V. Sotnikov // Вопросы атомной науки и техники. — 2018. — № 3. — С. 58-62. — Бібліогр.: 12 назв. — англ.

In the wakefield accelerator for a separation of a long train of bunches to drive and accelerated ones, it is proposed to use a phase inverter of electromagnetic waves of the microwave frequency range. A change in the phase of the wave by 180° occurs when the microwave power is reflected from the resonator when the resonance is disrupted by igniting the plasma in a glass vessel placed in the resonator. A scheme for the implementation of a phase-inverter is proposed, for which a model version of the phase-inverter is assembled, and photomultiplier measurements of the radiation from a source of neon plasma are carried out. When a rectangular pulse of 0.2…1 μs duration, amplitude 250…800 V and current up to 1 A is supplied to the plasma source, the signal from the photomultiplier output has a rather "steep" rising edge (up to 58 ns) and a low-angle trailing edge (more than 100 μs). The duration of the decay (fall time) remains constant and does not change when the duration, frequency, and amplitude of the pulses applied to the plasma source change, and the duration of the rising edge decreases with increasing amplitude. Qualitative measurements on the phase invertor model showed that the waveforms of the reflected and transmitted waves have a similar shape as the signals from the photomultiplier output, but they have a flatter rising edge (200…500 ns) and the trailing edge (~ 400 μs). From the studies carried out it follows that the developed phase inverter can be used for a single (per pulse) separation of the bunch sequence relative to the wakefield wave.